Certified Rhythm Analysis Technician (CRAT) Practice Exam

Question: 1 / 400

At the normal paper speed of 25 mm/sec, what does the smallest box on the ECG paper represent in time and voltage?

0.04 seconds, 0.1 mV

The smallest box on the ECG paper is defined by its dimensions, where the standard paper speed of 25 mm/sec is utilized. Each small box represents a specific duration of time and a specific amount of voltage.

At this paper speed, the time representation of one small box is 0.04 seconds. This is derived from the standard metric wherein the ECG strips are divided into larger and smaller boxes, and with 25 mm representing one second, dividing it into 25 smaller boxes shows that each box accounts for 1/25th of a second, equaling 0.04 seconds.

In terms of voltage, each small box represents 0.1 mV. This is consistent across standard ECG paper, allowing for straightforward calibration and interpretation of the amplitude of the electrical signals being recorded.

This understanding of the smallest box representation is crucial for interpreting ECG findings accurately, as it provides both temporal and electrical context necessary for clinical assessments.

Get further explanation with Examzify DeepDiveBeta

0.20 seconds, 0.5 mV

5 seconds, 1 mV

0.5 seconds, 0.5 mV

Next Question

Report this question

Download Certified Rhythm Analysis Technician (CRAT) Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy